Answer:- Some of the PhoneGap API are • Accelerometer • Camera • Capture • Compass • Connection • Contacts • Device • Geo-location and so on

Answer:- For, • IOS: Xcode, iOS SDK • Android: Android SDK, ADT plugin • BlackBerry: Sun SDK, Apache ant and BlackBerry Webworks SDK • Symbian: SDK

Answer:- • PhoneGap: It is a framework for mobile application development, built upon the open source Apache Cordova project. It permits you to write an app once with CSS, JavaScript, HTML and then deploys it to a broad range of mobile devices without losing the features of a native app. • PhoneGap Build: It is a cloud-based service built on top of the PhoneGap framework.

Answer:- Some of the PhoneGap events include • Pause • Resume • Deviceready • Offline • Endcallbutton • Volumedownbutton and so on

Answer:- The most fundamental differences between AIR and PhoneGap is that you build AIR applications using tools rooted in the Flash Platform, and you can develop PhoneGap application using HTML, CSS and JavaScript. AIR applications use the AIR runtime, it enables you to have a single code base, with the exact similar expected behavior through all supported platforms. PhoneGap applications execute inside of the native web browser component for each supported platform. For separate platform, PhoneGap may behave differently.

Answer:- PhoneGap applications can be architect, in the same way, like other mobile web services. The main difference is that the initial HTML assets are available locally, instead of a remote server. The PhoneGap application loads the initial HTML which can request resources from a server or from the local environment. PhoneGap also supports the single page web experienced model.

Answer:- PhoneGap plugin contains two files • JavaScript file that defines the function for accessing the native hooks • Implementation files written in the native language to co-ordinate with native phone features To create your own PhoneGap plugins, you have to • Make a new directory in your ${PROJECT_DIR}/plugins directory • Make a JavaScript file within that new directory • Make a new Objective-C class that extends the PhoneGap command class and also in the new directory

Answer:- PhoneGap cameraoptions available are • Quality: It tells the quality of saved image that range from [0,100] • Destination Type: Choose the format of the return value. Defined in navigator.camera.DestinationType • Source Type: Set the source of the picture. Defined in navigator.camera • AllowEdit: Before selection of image, it allows simple editing of image • Encoding Type: It determines the encoding type of the returned image • TargetWidth: It determines how you can set image width • TargetHeight: It tells how you can set image height • Media Type: Here you can set the media type to select from

Answer:- To upgrade PhoneGap in Mac and Linux • $ sudo npm install –g phonegap For Windows: • C:> npm install –g phonegap

Answer:- For a compass heading object the iOS quirks are • trueHeading is returned only when location services are executing through geolocation.watchlocation() • For iOS>4 devices, if the mobile device is revolved or rotated and the app supports that orientation, the heading value will be reported back with respect to the current orientation

Answer:- • seekTo in OpenGap Media API is a function that updates the latest position of the underlying audio file of a Media Object • getDuration is a function that returns the duration of the audio file in seconds. It will return the value -1, if the duration is unknown

Answer:- As the front-end uses JavaScript it does have some limitation • Data processing: Compare to JavaScript native language is much faster • Back-ground processing: Large number of application depends on background thread while PhoneGap API are built using JavaScript which does not support multi-threaded and hence does not support back ground processing • Advanced graphics: Apps that use advanced graphics can be accessed explicitly by third party libraries, which can be best done natively • Complex business logic: Number of complex business app can be accessed better with a native code • Access advanced native functionality: Number of native API’s are not supported by PhoneGap’s API

Answer:- • Memory-store.js (MemoryStore) • Is-store.js (LocalStorageStore) • Websql-store.js (WebSqlStore)

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